Rear Brake Sticking

[Adam]

I took my bike for its MOT and it failed because of a sticking rear brake. I've taken the rear wheel off and had a look at the brake caliper and it seems one of the sliders has seized up. I can't work out how to remove the slider though, I've taken a picture of the slider in question there just isn't anywhere to remove the bolt one end it a round head and the other is the end of the bolt.

Any ideas? Bike is a 2010 Yamaha WR 125R

http://i963.photobucket.com/albums/ae119/AdamWhymer/image-3.jpg

The bottom is the round head, the black bit is something rubber and the top bit is where the bolt goes into.

[acting_strange]

I took my bike for its MOT and it failed because of a sticking rear brake. I've taken the rear wheel off and had a look at the brake caliper and it seems one of the sliders has seized up. I can't work out how to remove the slider though, I've taken a picture of the slider in question there just isn't anywhere to remove the bolt one end it a round head and the other is the end of the bolt.

Any ideas? Bike is a 2010 Yamaha WR 125R

http://i963.photobucket.com/albums/ae119/AdamWhymer/image-3.jpg

The bottom is the round head, the black bit is something rubber and the top bit is where the bolt goes into.

 

So you put a spanner/socket on the bolt head and undo it...

[Adam]

That's the thing, there isn't one! The bit you can see is just a perfectly round head no spanner will fit it..

[mattycoops43]

pull the rubber back and see if there's a nut drive hidden under it, or look for a cap head end on the small end.

[Adam]

I'll see if I can pull that rubber bit back, the other slider has a nut so it might be that. If all else fails I'll go see my local yamaha dealers and ask them

[eastanglianbiker]

it might be that one end you have a bolt and t he other end (the one in pic) is just a sliding unit and its seized in and needs freeing off to allow it to slide out

[Adam]

I get what you're saying Steve but the caliper is attached to a mounting bracket and that's where the slider goes into. I've looked online and you can remove the two to separate the caliper and mounting bracket but I can't find a guide anywhere! Could it be that the slider pictured is just held in place in the mounting bracket? From the pictures I've seen when the caliper is removed from the mounting bracket all that's left is the other slider (not pictured) and a hole.

[acting_strange]

ok first of all is this it?...http://www.yamahascooterspares.co.uk/spares/epcImages/10076/29.jpg

If it is then it is obviously seized... get the assembly off the bike...then you will need to gently lift the rubber boot and spray some wd40 in..using a rubber hammer gently tap it back and forth until it moves then just keep doing it until it comes off..